President Donald Trump called on Americans to “answer hate with love, answer cruelty with kindness,” after a troubled 19-year-old former pupil gunned-down students and teachers at a Florida school.

While speaking on the shooting, he addressed “America’s children” directly, saying he wants them to know “you are never alone and never will be. … If you need help turn to a teacher, a family member, a local police officer or a faith leader.”

He urged Americans to work together to create a culture that “embraces the dignity of life.”

He also said he’s committed to tackling the “difficult issue of mental health.” He tweeted early Thursday that the suspect appeared to be “mentally disturbed.”